public override void DoTransaction()
        {
            if (SelectedAccount.AccountActive == true)
            {

                if ((SelectedAccount is SavingsAccount && SelectedAccount.AvaliableFunds >= Amount) ||
                     ((SelectedAccount is LineOfCreditAccount && SelectedAccount.AvaliableFunds >= Amount)))
                {
                    TransactionStatus = Status.Complete;
                    this.SelectedAccount.CurrentBalance -= Amount;

                }
                else
                {
                    throw new NoSufficientFundsException();
                }
            }
            else
            {
                throw new AccountInactiveException();
            }
        }